Motorola Droid Turbo Battery, BoxWave [Solar Rejuva PowerPack (23000mAh)] Solar Powered Backup Power Bank for Motorola Droid Turbo - Bold Orange 23000 mAh Internal Battery Micro USB input, standard USB output, 5v at 1 amp 3 LED Incremental Power Level Indicator Sleek, compact design stores just about anywhere Solar charging LED indicator light